If you’re on Twitter, you can help pressure Arctic oil drillers Shell and win a t-shirt at the same time. Here’s the deal:

You pick an Arctic collective (#PolarBear, #Narwhal, #ArcticFox, #SnowyOwl or #Walrus) and you tweet to Shell on that hashtag including #TellShell.

We’ll count the points equal to your number of followers and add that live to your collective’s score.

Whichever collective has the most points by 1200 GMT on Monday 23rd July will be the winning collective!

Only your first tweet counts - so make sure you have the right collective from the start!

50 random people from the winning collective will be sent their very own super eco, organic t-shirts with their collective icon on it. We’ll also make the design available to download for the rest of the collective too.

Just click the collective badge of choice to generate a tweet you can use.

Recruit your friends - and celebrities - to your collective’s campaign if you want to win. Remember more followers = more points.